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Author Topic: New SHA Functions Boost Crypto On 64-bit Chips  (Read 2213 times)
kseistrup
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February 19, 2011, 05:49:54 PM
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The topic “New SHA Functions Boost Crypto On 64-bit Chips” was posted on Slashdot, and is talking about FIPS 180-4.  I haven't been able to retrieve the PDF from CSRC, but the summary caught my attention:

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Draft FIPS 180-4 adds a general procedure for creating an initialization hash value and two additional secure hash algorithms: SHA-512/224 and SHA-512/256, and removes a requirement that padding must be done before hash computation begins. SHA-512/224 and SHA-512/256 may be more efficient alternatives to SHA-224 and SHA-256, respectively, on platforms that are optimized for 64-bit operations.

Does anyone know if SHA-512/256 produces the same digests as SHA256?  If so, the alleged efficiency might be interesting for CPU-miners on 64-bit platforms.

Anyone?

Cheers,

Klaus Alexander Seistrup
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February 19, 2011, 06:19:12 PM
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Does anyone know if SHA-512/256 produces the same digests as SHA256?  If so, the alleged efficiency might be interesting for CPU-miners on 64-bit platforms.

No, it would not.

Hal Finney
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